Due to a manufacturing defect, the memory used by part of NVIDIA’s graphics card range is starting to run out. This is particularly the case for the RTX 4070, and the chameleon is thinking of making a few modifications to compensate for the lack of memory chips.
RTX 4070: a GDDR6 variant to make up for the lack of GDDR6X?
As a reminder, the RTX 4070 is a card that occupies the mid-range sector. This model benefits from an AD104-250-A1 GPU, with a total of 5888 cuda cores scattered across 46 SM. There are also 184 TMUs and 64 ROPs. As far as memory is concerned, the original datasheet highlights a total of 12 GB in GDDR6X and a 192-bit wide bus. Bandwidth, coupled with 21 Gbps memory, is 504.2 GB/s.
It’s this memory part that should therefore be modified to meet the imperatives of the situation. So, by swapping GDDR6X for GDDR6, we should see a reduction in the card’s bandwidth. This would then drop to 480 GB/s, i.e. a 5% drop. Fortunately, with manual overclocking, it should be possible to make up for the shortfall caused by this memory change.
Finally, we’ve learned that the Greens may opt for a new PCB for mounting this memory: PG141 SKU 347.
